Researchers at NIST have developed advanced techniques using scanning tunneling microscopes (STMs) to manipulate individual atoms with atomic precision. By controlling the tip-adatom distance with picometer precision, they can move single atoms to create desired nanostructures.
The process involves imaging single atoms using the STM, then adjusting the tip position to trap and move the atom. Researchers have developed new measurement techniques to “see” and “hear” the atom movements, enabling them to study atom-surface interactions and improve manipulation efficiency.
The ultimate goal is to develop an Autonomous Atom Assembler (AAA) that can assemble complex nanostructures from random atom arrangements without human intervention. Initial trials have successfully constructed nanostructures like the NIST logo and quantum elliptical corrals.
This work represents a significant advance in nanofabrication capabilities, enabling precise control of atomic-scale structures for potential applications in quantum computing, nanoelectronics, and other emerging technologies.
Source: https://www.nist.gov/programs-projects/atom-manipulation-scanning-tunneling-microscope
Keywords: Single atom manipulation, Atom-surface interactions, Tunneling junction, Autonomous atom assembler, Quantum confinement
